Other reasons include the need to address any nutrient deficiencies when there is no other way to do so, iron deficiency and for a coping strategy.

Frida added: "Coal is a common pica craving among expectant women. When Lifesum conducted a poll of cravings, we found that as many as 14% of users were craving coal. Often, the reason for this is an iron deficiency, so getting more of it from food sources is a good idea, alternatively, if advised by a doctor, iron supplements can help."